public static function init() { self::$currentPage = max(1, $_GET['p']); // 外部设置当前页的值 self::$pageTotal = ceil(self::$total / self::$pageSize); if (self::$currentPage - self::$pageMoreSize > self::$borderSize) { self::$leftMore = true; } if (self::$currentPage + self::$pageMoreSize < self::$pageTotal - self::$borderSize) { self::$rightMore = true; } if (self::$currentPage == 1) { self::$isFirst = true; } if (self::$currentPage == self::$pageTotal) { self::$isLast = true; } }